Charts illustrating the findings of a study which showed that many diets were deficient in whole grain wheat cereal, as manufactured by the Ralston Purina Company. Colour lithograph, 1944 (?).

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Works from the collections

Charts illustrating the findings of a study which showed that many diets were deficient in whole grain wheat cereal, as manufactured by the Ralston Purina Company. Colour lithograph, 1944 (?).